Unlimited SIM One NZ: Plans, Pricing & Travel Options
Anyone who’s shopped for a mobile plan in New Zealand knows the phrase “unlimited data” comes with fine print. One NZ’s lineup—from the unlimited One Plan to the $29 Travel SIM—promises simplicity, but the real story is in the details. This guide compares One NZ’s unlimited data options against each other and against Spark, so you know exactly what you’re paying for and whether it fits your needs.
One Plan monthly cost (prepaid): $88 ·
One Plan monthly cost (pay monthly): $99 deposit required ·
Travel SIM price: $29 ·
SIM card purchase: from $2 ·
Data speed limit on One Plan: No limit ·
Unlimited calls and texts: Yes, to NZ and Aus
Quick snapshot
- Unlimited data, calls, texts (One NZ Pay Monthly)
- $88/month prepaid or $99 deposit pay monthly (One NZ Prepay Plus)
- No speed cap (One NZ Pay Monthly)
- Designed for visitors (One NZ Travel SIM)
- $29 upfront for 30 days (One NZ Travel SIM)
- Local and international connectivity (calls & texts to NZ & Aus) (One NZ Travel SIM)
- Data options from 250 MB to 50 GB (One NZ Prepay Plus)
- Unlimited prepaid available (One Plan $88) (One NZ Prepay Plus)
- Valid for one calendar month (One NZ Prepay Plus)
- Similar unlimited plan pricing (~$79/4 weeks for 40GB max speed) (The Fast Mode (telecom industry news))
- Coverage differences by region (One NZ Pay Monthly)
- Contract vs no-contract options (One NZ Pay Monthly)
One NZ’s One Plan delivers truly unlimited data with no speed cap for $88 prepaid. But that price is nearly three times the cost of Spark’s prepaid Endless Data plan, which caps max-speed data at 40GB before slowing. For heavy users, One NZ wins; for lighter users, Spark may stretch the dollar further.
The table below shows the key specs for One NZ’s unlimited SIM at a glance.
| Attribute | Value |
|---|---|
| Network | One NZ (formerly Vodafone NZ) (One NZ Pay Monthly) |
| Coverage | 4G/5G in major urban areas (One NZ Pay Monthly) |
| Unlimited data plan name | One Plan (One NZ Pay Monthly) |
| SIM card cost | From $2 (One NZ Prepay Plus) |
| Travel SIM | $29 for 30 days (One NZ Travel SIM) |
How much is unlimited data One NZ?
What is the One Plan price?
The One Plan from One NZ costs $88 per month prepaid or $99 deposit required on a pay-monthly plan (One NZ Prepay Plus). It includes unlimited data with no speed cap, plus unlimited calls and texts to NZ and Australia.
Are there any additional fees?
- A SIM card costs as little as $2 when you buy a prepaid pack (One NZ Prepay Plus).
- Pay-monthly customers pay a $99 deposit upfront (One NZ Pay Monthly).
- Companion plans for additional lines are available at $42 each per month on the $88 One Plan (One NZ Pay Monthly).
One NZ’s One Plan looks expensive against Spark’s prepaid $79 plan, but the difference is that One NZ never throttles speed. Spark reduces speed after 40GB. For a household that uses 100GB+ per month, One NZ is actually cheaper per gigabyte.
What is the best SIM card for Travellers in New Zealand?
What is the One NZ Travel SIM?
One NZ offers a dedicated Travel SIM priced at $29 for 30 days (One NZ Travel SIM). Longer stays cost $49 for 60 days or $69/$99 for 90 days. The SIM includes local calling and texting to NZ and Australian numbers.
How does it compare to other travel SIMs?
Spark’s tourist SIM starts at $29 for 1.5GB and goes up to $49 for 10GB (BitJoy (travel guide)). One NZ’s Travel SIM offers no data cap at the $29 tier; instead it uses a $5/day add-on for unlimited max-speed data. That add-on gives 24 hours of unlimited NZ data plus calls/texts to NZ and Aus (One NZ Travel SIM).
The implication: If you plan to use data every day, the One NZ Travel SIM plus daily $5 add-on adds up ($29 base + $5/day). For a two-week trip, that’s $29 + $70 = $99 – comparable to One NZ’s 90-day Travel SIM at $99. For short stays, Spark’s fixed data packs may be cheaper if you only need 1.5–10GB total.
How much does a One NZ SIM card cost?
Where to buy a One NZ SIM?
One NZ SIMs are available at One NZ retail stores, select supermarkets, and electronics retailers. The cheapest prepaid SIM pack costs $2 and includes a small amount of initial credit (One NZ Prepay Plus).
What are the SIM card options?
- Standard prepaid SIM: $2, then choose a plan online.
- Travel SIM: $29 for 30 days, with $5/day add-ons for unlimited data.
- Pay-monthly SIM: Free when you sign a contract, but a $99 deposit applies for the One Plan (One NZ Pay Monthly).
The pattern: One NZ makes the SIM cheap to acquire, but the real cost is the plan you attach. The $2 SIM is a low barrier to entry; the $29 Travel SIM bundles connectivity for a month.
Can you buy an unlimited SIM card?
Which One NZ plans offer unlimited data?
One NZ offers true unlimited data on the One Plan (prepaid $88 or pay-monthly $99 deposit) and a “endless” option on Endless Plus – $70 per month for 50GB max-speed then reduced speeds (One NZ plan changes). The key difference: One Plan never slows; Endless Plus does after 50GB.
Is there a prepaid unlimited option?
Yes, the One Plan is available as a prepaid option for $88/month (One NZ Prepay Plus). You can also add a $5 daily add-on to any prepaid plan for 24 hours of unlimited max-speed data (One NZ Prepay Plus).
Who is better, Spark or One NZ?
What are the differences between Spark and One NZ?
Spark’s prepaid “Endless Data” plan costs $79 per four weeks for 40GB at max speed, then reduced speeds (The Fast Mode (telecom industry news)). One NZ’s One Plan costs $88/month prepaid with no speed cap. Spark’s plan is ~$79 per 28 days vs One NZ’s $88 per 30 days – a small price gap, but the speed difference matters.
The comparison table below highlights the key differences between the two unlimited prepaid offerings.
| Feature | One NZ One Plan (prepaid) | Spark Endless Data (prepaid) |
|---|---|---|
| Monthly cost | $88 (30 days) | $79 (28 days) |
| Max-speed data limit | No limit | 40GB, then reduced |
| Speed after cap | Full speed always | Reduced (throttled) |
What this means: One NZ’s plan costs about $3 more per month but offers unlimited full-speed data, while Spark throttles after 40GB.
| Specification | One Plan (Pay Monthly) | One Plan (Prepaid) |
|---|---|---|
| Data limit | Unlimited, no cap | Unlimited, no cap |
| Speed limit | None | None |
| Deposit | $99 | None |
| Companion lines | $42/month each | Not available |
| Business price (ex GST) | $76.52 | N/A |
Upsides
- True unlimited data with no speed cap on One Plan
- Competitive prepaid entry at $88
- Travel SIM covers 30–90 days with add-on flexibility
- 5G coverage in urban areas
Downsides
- One Plan is expensive for light users compared to Spark
- Travel SIM base data is limited without daily add-on
- No international roaming on One Plan
- Deposit required for pay-monthly customers
What the evidence shows
Confirmed facts
- One Plan prepaid price $88 (One NZ Prepay Plus)
- Pay monthly requires $99 deposit (One NZ Pay Monthly)
- Travel SIM price $29 (One NZ Travel SIM)
- SIM card cost from $2 (One NZ Prepay Plus)
- One Plan has no data or speed cap (One NZ Pay Monthly)
What’s still unclear
- Exact data speeds in rural areas – One NZ does not publish per-region speeds.
- Spark’s current prepaid unlimited plan pricing beyond the 2024 launch figure – not updated on Spark’s own site as of writing.
- Real-world fair-use enforcement on One NZ’s “Endless” reduced-speed plans.
What the experts say
“The unlimited prepay option now available from One NZ gives users a no-compromise data experience – if they’re willing to pay for it.”
MoneyHub reviewer (consumer finance authority in NZ)
“One NZ says its One Plan has no limit on mobile data or speeds – it’s a genuine unlimited plan.”
One NZ Pay Monthly page (official provider)
“Spark’s prepaid Endless Data plan at $79 for 40GB of max-speed data offers a lower entry price but with a throttle after the cap.”
The Fast Mode (telecom industry news)
whatsdavedoing.com, one.nz, reddit.com, churnewzealand.com, one.nz, getsparkwireless.com, one.nz, one.nz
While the Unlimited SIM One NZ plan offers strong value at $88, you can also compare One NZ mobile plans in detail for a full picture of pricing and coverage.
Frequently asked questions
Does One NZ throttle unlimited data?
On the One Plan prepaid and pay-monthly, One NZ states there is no limit and no speed cap (One NZ Pay Monthly). On the Endless Plus plan ($70/month), speed is reduced after 50GB.
Can I use a One NZ SIM overseas?
The One Plan is for use in New Zealand only. The Travel SIM also operates only in New Zealand. One NZ does not offer international roaming on these consumer plans.
What is the difference between prepaid and pay monthly One NZ plans?
Prepaid plans require no credit check and no deposit (except the One Plan prepaid still costs $88/month). Pay-monthly plans require a $99 deposit for the One Plan and a credit check.
Is One NZ better than Vodafone?
One NZ is the same network – it rebranded from Vodafone NZ in 2022. The coverage is identical.
How do I activate a One NZ SIM?
Insert the SIM, go to one.nz/activate, and choose a plan. You can also activate in-store.
What are the contract terms for One NZ?
Pay-monthly plans are 24-month contracts unless you choose the prepaid option. Early termination fees apply.
Does One NZ offer unlimited data for tablets?
One NZ does not offer a dedicated tablet unlimited plan. You can use a One Plan SIM in a tablet, but it’s a mobile plan.
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